2009 Audi S4 vs. 2005 BMW 320
To start off, 2009 Audi S4 is newer by 4 year(s). Which means there will be less support and parts availability for 2005 BMW 320. In addition, the cost of maintenance, including insurance, on 2005 BMW 320 would be higher. At 4,163 cc (8 cylinders), 2009 Audi S4 is equipped with a bigger engine. In terms of performance, 2009 Audi S4 (340 HP @ 7000 RPM) has 199 more horse power than 2005 BMW 320. (141 HP @ 4000 RPM). In normal driving conditions, 2009 Audi S4 should accelerate faster than 2005 BMW 320. With that said, vehicle weight also plays an important factor in acceleration. 2005 BMW 320 weights approximately 564 kg more than 2009 Audi S4.
Because 2009 Audi S4 is four wheel drive (4WD), it will have significant more traction and grip than 2005 BMW 320. In wet, icy, snow, or gravel driving conditions, 2009 Audi S4 will offer significantly more control. With that said, do keep in mind that many other factors such as speed and the wear on your tires can also have significant impact on traction and control. Let's talk about torque, 2009 Audi S4 (410 Nm @ 3500 RPM) has 80 more torque (in Nm) than 2005 BMW 320. (330 Nm @ 2000 RPM). This means 2009 Audi S4 will have an easier job in driving up hills or pulling heavy equipment than 2005 BMW 320.
Compare all specifications:
| 2009 Audi S4 | 2005 BMW 320 | |
| Make | Audi | BMW |
| Model | S4 | 320 |
| Year Released | 2009 | 2005 |
| Body Type | Convertible | Sedan |
| Engine Position | Front | Front |
| Engine Size | 4163 cc | 1995 cc |
| Engine Cylinders | 8 cylinders | 4 cylinders |
| Engine Type | V | in-line |
| Valves per Cylinder | 5 valves | 4 valves |
| Horse Power | 340 HP | 141 HP |
| Engine RPM | 7000 RPM | 4000 RPM |
| Torque | 410 Nm | 330 Nm |
| Torque RPM | 3500 RPM | 2000 RPM |
| Engine Bore Size | 84.6 mm | 84 mm |
| Engine Stroke Size | 92.8 mm | 90 mm |
| Engine Compression Ratio | 18.0:1 | 17.0:1 |
| Fuel Type | Gasoline | Diesel |
| Drive Type | 4WD | Rear |
| Transmission Type | Manual | Manual |
| Number of Seats | 4 seats | 5 seats |
| Number of Doors | 2 doors | 4 doors |
| Vehicle Weight | 930 kg | 1494 kg |
| Vehicle Length | 4580 mm | 4480 mm |
| Vehicle Width | 1780 mm | 1750 mm |
| Vehicle Height | 1400 mm | 1420 mm |
| Wheelbase Size | 2660 mm | 2770 mm |
| Fuel Consumption Highway | 12.4 L/100km | 4.5 L/100km |
| Fuel Consumption City | 18.1 L/100km | 7.8 L/100km |
| Fuel Consumption Overall | 15.7 L/100km | 5.8 L/100km |
| Fuel Tank Capacity | 63 L | 63 L |
